Renault Meganne does not turn on

Companions I have the following problem, make the change of the distribution band of a Megane II 2.0 Use the manual that downloads from here following the istrucciones to the letter with the tool and everything but now that I try to turn it on the car does not start I go and everything turns correctly but still does not turn on it no longer check everything from top to bottom and I do not see any problem.

The safest thing is that the head is damaged if you have compression optimates the engine if you do not check if it brings crankshaft position sensor if there is spark and gasoline if there is something there is a bad way when you put it on time

That or the computer can be blocked or the key decoded, but first of all the spark and fuel is then we see what happens.

I imagine that you will have closed and open the car with the key, why does it have a security system in case of theft after the car is open for a while if it starts.

After buying what the classmates have told you, if you give it to contact and the flickering antiarranque light it will not start you. (Key problem or you have to close and open the doors again to start)